610755421 has 2 divisors, whose sum is σ = 610755422. Its totient is φ = 610755420.

The previous prime is 610755403. The next prime is 610755443. The reversal of 610755421 is 124557016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 595848100 + 14907321 = 24410^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 610755421 - 2⁷ = 610755293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610755401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305377710 + 305377711.

It is an arithmetic number, because the mean of its divisors is an integer number (305377711).

Almost surely, 2^610755421 is an apocalyptic number.

It is an amenable number.

610755421 is a deficient number, since it is larger than the sum of its proper divisors (1).

610755421 is an equidigital number, since it uses as much as digits as its factorization.

610755421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 610755421 is about 24713.4663898046. The cubic root of 610755421 is about 848.4425556697.

The spelling of 610755421 in words is "six hundred ten million, seven hundred fifty-five thousand, four hundred twenty-one".